1021091 Includes Only:1 Plug-in Board for Components2 Battery Holders1 Set of Conductors and Non-Conductors1 Set of 10 E10 lamps 1.3 V, 60 mA1 Set of 10 E10 lamps 3.8 V, 300 mA3 E10 lamp sockets2 Change-over switches1 Toggle switch, single pole1 Push-button (NO), single pole1 Roll of chrome-nickel wire1 Roll of constantan wire1 Roll of iron wire1 Set of 10 connecting plugs6 Connecting plugs, 4 mm6 Crocodile clips1 Potentiometer, 220 Ω 1 Linear Resistor, 47 Ω, 2W2 Linear Resistors, 100 Ω, 2W2 Zinc plates2 Copper plates2 Carbon plates1 Glass trough1 Set of 3 experiment leads, red1 Set of 3 experiment leads, blue1 Roll of experiment cord1 Weight, 50 g1 Tea candleIncludes Instructions for 28 Experiments on Electricity:Simple electric circuits (2x)Electrical conductors and insulatorsProduction of heat and lightVarious sources of electricityConduction in liquidsSingle-pole change-over switches (SPDT)Two-way switchesMeasurement of current in a simple electric circuitMeasurement of voltage in a simple electric circuitIncandescent lamps connected in seriesIncandescent lamps connected in parallelTerminal voltage and open-circuit (no-load) voltageBatteries connected in series and parallelBattery made from a lemonRelationship between voltage and current determined by varying voltageHow electrical power depends on other variables in an electric circuitHow electrical work depends on other variables in an electric circuitOhmic resistanceHow electrical resistance depends on temperature (2x)How electrical resistance depends on the length of the wireHow electrical resistance depends on the cross section of the wireHow electrical resistance depends on the material of the wireResistivityResistors connected in seriesResistors connected in parallelVariable resistorsPotentiometersFeatures:Set of apparatus for carrying out 28 fundamental student experiments on electricity.Stored in a tough Gratnells tray with foam inlay featuring recesses moulded to the shape of the apparatus and covered by a transparent lid.Circuits are assembled using components in plug-in housings plugged into a plug-in board.Power is supplied via 2 D-cell, LR20, 1.5 V batteries (batteries not included) or via an external power supply.